EP2632636B1 - Handwerkzeugmaschinenspannvorrichtung - Google Patents

Handwerkzeugmaschinenspannvorrichtung Download PDF

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Publication number
EP2632636B1
EP2632636B1 EP11758231.2A EP11758231A EP2632636B1 EP 2632636 B1 EP2632636 B1 EP 2632636B1 EP 11758231 A EP11758231 A EP 11758231A EP 2632636 B1 EP2632636 B1 EP 2632636B1
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EP
European Patent Office
Prior art keywords
clamping
unit
clamping element
spindle
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11758231.2A
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German (de)
English (en)
French (fr)
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EP2632636A1 (de
Inventor
Joachim Schadow
Florian Esenwein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2632636A1 publication Critical patent/EP2632636A1/de
Application granted granted Critical
Publication of EP2632636B1 publication Critical patent/EP2632636B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29—Details; Component parts; Accessories
    • B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
    • B27B5/32—Devices for securing circular saw blades to the saw spindle

Definitions

  • hand tool clamping devices which comprise a clamping unit which is intended to clamp a tool on a spindle. Furthermore, the hand tool clamping devices comprise a flow safety unit for preventing the clamping unit and / or the tool from running out of the spindle (see, for example, US Pat DE 102 008 015 955 A1 )
  • the invention relates to a hand tool clamping device with at least one clamping unit, which is intended to clamp a tool on a spindle, and with at least one flow safety unit to prevent a running of the clamping unit and / or the tool from the spindle.
  • a “clamping unit” is to be understood here in particular as a unit which is intended to clamp the tool axially against the spindle against a receiving flange.
  • the clamping unit is screwed by means of a thread with the spindle.
  • the clamping unit by means of another, a professional appear appropriate sense connection to a bracing of the tool with the Spindle is connected.
  • "intended” should be understood to mean in particular specially equipped and / or specially designed.
  • a “down-flow protection unit” is to be understood here as meaning, in particular, a unit which is intended to at least substantially prevent a release of a clamping force of the fastening unit in a braking operation in a braking operation and, in particular, to provide a clamping force acting on the tool by the clamping unit increase.
  • a "movement change unit” should in particular define a unit which comprises a mechanism, in particular a thread or other mechanisms that appear meaningful to a person skilled in the art, by means of which a movement type, such as a rotation, for example, into another type of movement, such as translation, can be converted.
  • the relative movement between the tool and the clamping unit can lead to a clamping force of the clamping unit is reduced and thus the clamping unit and / or the tool can run off of the spindle.
  • the movement change unit is designed as a lifting unit, which is provided to generate at least a relative movement of the two clamping elements along an axial direction during braking operation.
  • a “lifting unit” is to be understood here in particular as a unit by means of which a movement of an element, in particular a tensioning element of the tensioning unit, along a straight path, in particular along a rotation axis of the spindle, can be generated.
  • an "axial direction” is to be understood to mean, in particular, a direction along a central axis of the Clamping unit are understood, around which the clamping unit is at least substantially rotationally symmetrical.
  • the lifting element is formed in a ramp shape.
  • "Ramp-shaped” is to be understood here in particular as a geometric shape that has a mathematically defined gradient along a path starting from a starting point in the direction of an end point, so that there is a height difference between the starting point and the end point.
  • the lifting unit has at least one further lifting element which generates the second relative movement as a result of the first relative movement by means of an interaction with the lifting element.
  • a pitch of the lifting elements is preferably equal to or greater than a pitch of a thread of a clamping element of the clamping unit and the spindle to which the clamping unit is open and unscrewed.
  • the pitch of the lifting elements corresponds in particular to 100 to 150% of the pitch of the thread of the clamping element and the spindle, preferably 110 to 140% of the pitch of the thread of the clamping element and the spindle and more preferably 120 to 130% of the pitch of the thread of the clamping element and the Spindle.
  • friction-increasing means are incorporated in the thread of the fastening unit and the spindle, such as rubber elements, spring elements, coatings, etc.
  • a lifting element of the lifting unit is designed as a rolling body, which rolls on a rotation of the first transmission element relative to the second transmission element along a ramp-shaped lifting element. It can be achieved structurally simple relative movement for generating and / or maintaining a clamping force during braking operation.
  • the stop element is integrally formed with one of the clamping elements, wherein another of the clamping elements comprises at least one recess which is intended to receive the stop element.
  • another of the clamping elements comprises at least one recess which is intended to receive the stop element.
  • control recess is to be understood here in particular as a material recess into which the control element engages in order to produce a movement, wherein the control element and the control recess are movable in particular relative to one another.
  • control is pin-shaped.
  • the term "pin-shaped" should in particular be understood to mean a geometric shape which has at least essentially a main extension, in particular a main extension along a central axis about which the geometric shape is rotationally symmetrical, the main extension being at least as large as a perpendicular to the main extension Extension, in particular a diameter, the geometric shape.
  • the control is formed by a cylindrical pin.
  • the control element is embodied in another form that appears appropriate to a person skilled in the art.
  • a main extension of the control element runs in an assembled state at least substantially perpendicular to a central axis of the clamping unit and / or to a rotational axis of the spindle.
  • substantially perpendicular is intended here to define, in particular, an orientation of a direction relative to a reference direction, the direction and the reference direction, in particular in one plane, including an angle of 90 ° and the angle a maximum deviation of, in particular, less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.
  • the spindle and arranged on the spindle transmission element of the transmission unit in particular a form-fitting with the spindle connected transmission element, each having grooves and the control element to form an interface as in the grooves inserted rolling elements, in particular as a ball is formed.
  • a design of the control element as a thread between the spindle and arranged on the spindle, in particular in direct contact with the spindle, transmission element for generating a relative movement along the axis of rotation of the spindle between a transmission element of the transmission unit and the spindle is also conceivable.
  • Another embodiment of the control element which appears expedient to a person skilled in the art and / or the interface between the spindle and the transmission element is likewise conceivable.
  • the pin-shaped design of the control can advantageously be achieved a stable control.
  • structurally simple, for example, a securing function, in particular for axial securing and / or rotational securing, the transmission unit can be achieved on the spindle.
  • the at least two ribs may in this case extend, in particular starting from the outer surface, at least substantially perpendicularly in the direction of the control element, so that the at least two ribs can form a guide for the control element.
  • the control element preferably extends at least partially through the tensioning element in a region of the control recess.
  • extend through is to be understood here in particular as meaning that the control element has a main extension along a direction extending at least substantially perpendicular to the center axis of the tensioning element, which is greater than an extent of the control recess along the direction extending at least substantially perpendicular to the central axis , It can be achieved prematurely a secure coupling of the control with the control recess and with the clamping element.
  • the cam mechanism has at least one spring element which is provided to bias at least one clamping element of the clamping unit relative to the control element.
  • a "spring element” is to be understood here as meaning, in particular, an element which is elastically deformable under a load, wherein the element can store a potential energy and, after a discharge, can automatically return to its pre-stress state by means of the stored potential energy.
  • the spring element is preferably designed as a tension spring and / compression spring. However, it is also conceivable that the spring element is formed by another, an expert appearing appropriate element. It can be advantageously achieved a structurally simple provision of the cam gear and / or the transmission element relative to the spindle in a starting position.
  • control recess along the circumferential direction on a mathematically defined slope in the axial direction.
  • the pitch of the control recess corresponds in particular to 100 to 150% of a pitch of a thread between the clamping nut and the spindle, preferably 110 to 140% of the pitch of the thread between the clamping nut and the spindle and more preferably 120 to 130% of the pitch of the thread between the Clamping nut and the spindle. It can be advantageously achieved a compact safety device.
  • the invention is also based on a hand tool, in particular an angle grinder, with a hand tool clamping device according to the invention. It can be advantageously avoided a drainage of a tool from the spindle of the power tool.
  • FIG. 1 shows a trained as angle grinder 60a hand tool 62a with a hand tool clamping device 10a according to the invention in a schematic representation.
  • the angle grinder 60a comprises a protective hood unit 64a, a hand tool housing 66a and a main handle 68a, which extends on a side facing away from a tool 14a side 70a in the direction of a main extension direction 72a of the angle grinder 60a.
  • the portable power tool housing 66a comprises a motor housing 74a for receiving an electric motor (not shown here in detail) and a gear housing 76a for mounting a gear (not shown in detail here).
  • On the gear housing 76a an additional handle 78a is arranged on the angle grinder 60a.
  • the auxiliary handle 78a extends transversely to the main extension direction 72a of the angle grinder 60a.
  • FIG. 2 shows a detailed view of a spindle 16a of the machine tool 62a designed as an angle grinder 60a with the arranged on the spindle 16a hand tool clamping device 10a in a schematic representation.
  • the spindle 16a extends perpendicular to the main extension direction 72a from the gear housing 76a (not shown here).
  • the hand tool clamping device 10a in this case has a clamping unit 12a, which is intended to clamp the disk-shaped tool 14a on the spindle 16a.
  • the spindle 16a has two flats 82a on an outer periphery for receiving a receiving flange 80a, which are arranged diametrically and thus form a two-edge 84a. In this case, only one of the flats 82a is shown in FIG.
  • the outer periphery of the spindle 16a is disposed in a plane perpendicular to a rotation axis 86a of the spindle 16a.
  • the clamping unit 12a of the hand-held power tool clamping device 10a comprises a first clamping element 22a and a second clamping element 24a (FIG. 2) movable relative to the first clamping element 22a (FIG. FIG. 5 ).
  • the first clamping element 22a is disc-shaped. Furthermore, the first clamping element 22a has a contact surface 92a, which abuts the tool 14a in an assembled state. The tool 14a is pushed onto the spindle 16a in an assembly with a central opening along an axial direction 28a until the tool 14a bears against the receiving flange 80a.
  • the clamping unit 12a is screwed by means of an internal thread 88a of the second clamping element 24a on a thread 90a of the spindle 16a until the contact surface 92a of the first clamping element 22a rests against the tool 14a.
  • the tool 14a is clamped to the receiving flange 80a by means of the clamping unit 12a on the spindle 16a.
  • the contact surface 92a of the first clamping element 22a and a voltage applied to the contact surface 92a side of the tool 14a may in this case an adhesive coating (not shown here), so that a friction between the contact surface 92a of the first clamping element 22a and at the Contact surface 92a adjacent side of the tool 14a is high.
  • a torque is transmitted from the spindle 16a to the tool 14a.
  • the tool 14a is driven to rotate in a clockwise direction as viewed by the angle grinder 60a in the operation of the angle grinder 60a.
  • a clamping force of the clamping unit 12a is maintained for clamping the tool 14a due to friction between the clamping unit 12a and the abutting against the contact surface 92a side of the tool 14a.
  • the first clamping element 22a has, on a side 174a facing away from the contact surface 92a, two rotational engagement recesses 176a, 178a into which a two-nut rotary key can engage to produce an up and / or unscrewing torque.
  • the Drehit Cyprusaus Principle 176a, 178a in this case each have a central axis which extends in an assembled state of the power tool clamping device at least substantially parallel to the rotation axis 86a.
  • the angle grinder 60a includes a braking device (not shown in detail here) to avoid trailing the spindle 16a in a shutdown of the angle grinder 60a, for example by means of an interruption of a power supply.
  • the angle grinder 60a switches to a braking operation and brakes the spindle 16a by means of the brake device.
  • the tool 14a moves further due to inertia in the clockwise direction or further about the axis of rotation 86a of the spindle 16a, so that a torque difference between the tool 14a, the spindle 16a and the clamping unit 12a arises. This torque difference leads to a relative movement between the tool 14a and the clamping unit 12a.
  • the movement changing unit 20a is designed as a lifting unit 26a, which is provided to move the first clamping element 22a along the axial direction 28a as a result of the first relative movement, in particular the rotation, relative to the second clamping element 24a.
  • the lifting unit 26a has three first lifting elements 30a, 32a, 34a, which are formed integrally with the first clamping element 22a.
  • the three first lifting elements 30a, 32a, 34a are formed in a ramp shape.
  • the first lifting elements 30a, 32a, 34a extend evenly distributed along a circular ring of 360 ° of the first clamping element 22a each along an angular range between 30 ° and 60 ° about a central opening 94a of the first clamping element 22a, which is provided for receiving the spindle 16a ,
  • the central opening 94a is formed here as a pass-hole.
  • This axial stroke causes a maintenance and / or an increase Clamping force between the internal thread 88a of the second clamping element 24a and the thread 90a of the spindle 16a, so that a drainage of the clamping unit 12a and / or the tool 14a can be prevented by the spindle 16a.
  • the hand tool clamping device 10a comprises three stop elements 42a, 44a, 46a, which are provided to limit the first relative movement between the first clamping element 22a and the second clamping element 24a and the rotation of the first clamping element 22a relative to the second clamping element 24a ( FIG. 5 ).
  • the stop elements 42a, 44a, 46a are arranged on the first clamping element 22a facing inner surface 98a of the second clamping element 24a.
  • the first clamping element 22a has three recesses 100a, 102a, 104a ( FIG. 6 ) intended to receive the stop members 42a, 44a, 46a.
  • the three stop elements 42a are uniformly distributed along the annulus of the second tensioning element 24a of 360 °, spaced from each other and spaced from the three second lifting elements 36a, 38a, 40a of the second tensioning element 24a. Furthermore, the three stop elements 42a, 44a, 46a have axial extensions that run along the axial direction 28a. The axial extensions are in this case selected such that the three stop elements 42a, 44a, 46a extend into the three recesses 100a, 102a, 104a of the first clamping element 22a.
  • the three recesses 100a, 102a, 104a extend on the circular ring of 360 ° of the first clamping element 22a uniformly distributed in each case along an angular range between 15 ° and 30 ° and are spaced from each other and to the first lifting elements 30a, 32a, 34a about the central opening 94a of the first clamping element 22a arranged.
  • lubricant pockets are arranged so that a low frictional resistance in a sliding of the ramp-shaped first lifting elements 30a, 32a, 34a arises on the ramp-shaped second lifting elements 36a, 38a, 40a during a rotation of the first clamping element 22a relative to the second clamping element 24a.
  • the second clamping element 24a has a bearing element 118a which is arranged in an annular recess 120a in the inner surface 98a of the second clamping element 24a.
  • the bearing element 118a is formed here as a plain bearing. However, it is conceivable that the bearing element 118a is formed in an alternative embodiment as a rolling bearing.
  • the annular recess 120a are also a plurality of lubricant pockets (here not shown in detail) arranged to receive lubricant evenly spaced from each other.
  • the Lagerelemtent 118a is made of an elastic, such as a resilient material, and is taken along the axial direction 28a biased in the annular recess 120a of the second clamping element 24a.
  • a surface pressure between the first lifting elements 30a, 32a, 34a and the second lifting elements 36a, 38a, 40a can be reduced, so that a low friction between the first lifting elements 30a, 32a, 34a and the second lifting elements 36a, 38a, 40a are achieved can.
  • a provision of the first clamping element 22a relative to the second clamping element 24a can be achieved as soon as one of the first clamping element 22a and the second clamping element 24a is in an at least substantially unloaded state, such as for example Disassembly of the spindle 16a, are located.
  • the clamping unit 12a further comprises a first sealing element 122a and a second sealing element 124a, which are provided to protect the clamping unit 12a from dust ingress from an external environment and to prevent lubricant leakage from the inside.
  • the first sealing element 122a is arranged in a first groove 126a of the second clamping element 24a
  • the second sealing element 124a is arranged in a second groove 128a of the second clamping element 24a ( FIG. 5 ).
  • the first groove 126a is disposed in a side surface 130a of the second tension member 24a.
  • the side surface 130a extends perpendicular to the inner surface 98a of the second clamping element 24a and along an entire circumference of the second clamping element 24a, which extends in a plane parallel to the inner surface 98a.
  • the second groove 128a is arranged in a side 132a, facing the side surface 130a, of a hollow cylinder 134a surrounding the central opening 96a of the second clamping element 24a.
  • the first sealing element 122a is press-fit into the first groove 126a and the second sealing element 124a is press-fit into the second groove 128a.
  • the first clamping element 22a for receiving the second sealing element 124a has a second groove 138a of the second clamping element 24a.
  • the second groove 138a is disposed in an inner side 140a of the central opening 94a of the first biasing member 22a and extends along an entire circumference of the central opening 94a.
  • the circumference of the central opening 94a extends in a plane which extends at least substantially parallel to the contact surface 92a of the first clamping element 22a.
  • the second groove 138 a has an extension along the axial direction 28 a, which is greater than an extension of the second sealing element 124 a along the axial direction 28 a.
  • FIG. 7 shows a perspective detail view of an alternative Salesforcezuegmaschinenspannvoroplasty invention 10b in an open state with an analog section along the line VV Fig. 4 .
  • Thesorgezuegmaschinenspannvoroplasty 10b comprises a clamping unit 12b, which is intended to clamp a tool 14b on a spindle 16b.
  • the clamping unit 12b includes a first clamping element 22b and a relative to the first clamping element 22b movable second clamping element 24b.
  • the hand tool clamping device 10b comprises a run-off securing unit 18b for preventing the clamping unit 12b and / or the tool 14b from running out of the spindle 16b.
  • the lifting unit 26b has three first lifting elements 30b, 32b, 34b, which are arranged on a side 116b of the first clamping element 22b facing away from a contact surface 92b. Furthermore, the lifting unit 26b has three second lifting elements 36b, 38b, 40b, which are formed integrally with the first clamping element 22b. The second lifting elements 36b, 38b, 40b are formed in a ramp shape.
  • the first lifting elements 30b, 32b, 34b are formed as rolling elements 142b, 144b, 146b.
  • the rolling bodies 142b, 144b, 146b are arranged in recesses 148b, 150b, 152b in the side 116b of the first clamping element 22b facing away from the contact surface 92b.
  • the recesses 148b, 150b, 152b are evenly distributed along a circular ring and spaced from one another in the first clamping element 22b.
  • the rolling elements 142b, 144b, 146b of the first clamping element 22b correspond to the ramp-shaped second lifting elements 36b, 38b, 40b of the second clamping element 24b.
  • the first lifting elements 30b, 32b, 34b are integrally formed on the first clamping element 22b and the second lifting elements 36b, 38b, 40b are formed as rolling elements and are arranged in recesses in the second clamping element 24b.
  • the rolling elements 142b, 144b, 146b Upon rotation of the first tension member 22b relative to the second tension member 24b due to a braking operation, the rolling elements 142b, 144b, 146b roll along the ramp-shaped second lift members 36b, 38b, 40b, thus generating an axial stroke along an axial direction 28b of the first tension member 22b relative to the second tension member 24b.
  • the movement changing unit 20c is designed as a lifting unit 26c, which is provided to generate at least one relative movement of the first clamping element 22c relative to the second clamping element 24c along the axial direction 28c during braking operation.
  • the lifting unit 26c is designed as a cam mechanism 154c which has two lifting elements 30c, 32c designed as control recesses 48c, 50c, in each of which one of two control elements 52c, 54c of the cam gear 154c engages.
  • the cam mechanism 154c it is also conceivable for the cam mechanism 154c to have another number of control elements 52c, 54c, which appears meaningful to a person skilled in the art, and to control recesses 48c, 50c.
  • a person skilled in the art will provide, depending on the application, a suitable number of control elements 52c, 54c and control recesses 48c, 50c.
  • the controls 52c, 54c are movably disposed in the control recesses 48c, 50c. Further, the controls 52c, 54c are formed pin-shaped. In this case, the control elements 52c, 54c are each fixed by means of a press fit in one of two recesses 158c, 160c of the second clamping element 24c. However, it is also conceivable that the control elements 52c, 54c are fixed to the spindle 16c by means of another type of connection that appears appropriate to a person skilled in the art, for example by means of a non-positive and / or a material connection.
  • the recesses 158c, 160c are arranged diametrically opposite one another on a side 162c of the second clamping element 24c extending along a circumferential direction 58c.
  • the recesses 158c, 160c along the circumferential direction 58c are arranged evenly distributed on the second clamping element 24c.
  • the control recesses 48c, 50c of the cam gear 154c are arranged on the first clamping element 22c.
  • the control recesses 48c, 50c have an extension along an angular range of approximately 20 ° along the circumferential direction 58c in a side 156c of the first clamping element 22c extending along the circumferential direction 58c.
  • the rotation between the first clamping element 22c and the second clamping element 24c arises during braking operation from the torque difference between the tool 14c and the clamping unit 12c.
  • the tool 14c rotates the first clamping element 22c by the resulting friction between the tool 14c and a contact surface 92c of the first clamping element 22c.
  • the first clamping element 22c moves translationally along the axial direction 28c as a result of the rotation relative to the second clamping element 24c.
  • the first clamping element 22c exerts a force along the axial direction 28c on the tool 14c.
  • the first clamping element 22c further has on a second clamping element 24c facing surface 170c lubricant receiving elements (not shown here), which are provided to allow a relative movement between the first clamping element 22c and the second clamping element 24c with low friction. It is also conceivable that the lubricant receiving elements are arranged on the second clamping element 24b or are arranged both on the first transmission element 22c and on the second clamping element 24c.
  • the hand tool clamping device 10c comprises two stop elements 42c, 44c, which are provided to limit the first relative movement between the first clamping element 22c and the second clamping element 24c and the rotation of the first clamping element 22c relative to the second clamping element 24c.
  • the stop elements 42c, 44c are each formed by one end of a dimension of the control recesses 48c, 50c, on which the control element 52c, 54c in a rotation of the first clamping element 22c realtiv strikes the second clamping element 24c when reaching an end position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Jigs For Machine Tools (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
EP11758231.2A 2010-10-29 2011-09-22 Handwerkzeugmaschinenspannvorrichtung Active EP2632636B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010043190 DE102010043190A1 (de) 2010-10-29 2010-10-29 Handwerkzeugmaschinenspannvorrichtung
PCT/EP2011/066479 WO2012055646A1 (de) 2010-10-29 2011-09-22 Handwerkzeugmaschinenspannvorrichtung

Publications (2)

Publication Number Publication Date
EP2632636A1 EP2632636A1 (de) 2013-09-04
EP2632636B1 true EP2632636B1 (de) 2015-01-21

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EP11758231.2A Active EP2632636B1 (de) 2010-10-29 2011-09-22 Handwerkzeugmaschinenspannvorrichtung

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Country Link
EP (1) EP2632636B1 (ru)
JP (1) JP5678195B2 (ru)
DE (1) DE102010043190A1 (ru)
RU (1) RU2588909C2 (ru)
WO (1) WO2012055646A1 (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11806857B2 (en) 2020-08-28 2023-11-07 Black & Decker, Inc. Airflow intake configuration in power tool

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017218622A1 (de) 2017-04-12 2018-10-18 Robert Bosch Gmbh Schleifmittelvorrichtung, insbesondere Schleiftellervorrichtung oder Stütztellervorrichtung
DE102017214117A1 (de) * 2017-08-11 2019-02-14 Robert Bosch Gmbh Schnellspannvorrichtung
CN109202501A (zh) * 2018-10-15 2019-01-15 兰州高压阀门有限公司 一种加工闸板的快速夹紧定位工装
US20230008040A1 (en) * 2019-12-17 2023-01-12 3M Innovative Properties Company Repositionable abrasive disc mounting assembly and method of using the same
DE102020201737A1 (de) * 2020-02-12 2021-08-12 Robert Bosch Gesellschaft mit beschränkter Haftung Adaptervorrichtung und Werkzeugmaschinensystem mit der Adaptervorrichtung
EP4063069B1 (en) * 2021-03-23 2022-12-07 Andrea Valentini Plate-like backing pad adapted for releasable attachment to a hand-held polishing or sanding power tool

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
US5464365A (en) * 1991-09-21 1995-11-07 Robert Bosch Gmbh Motor-driven hand-held machine tool
DE102004061871B4 (de) * 2004-12-22 2007-05-31 Erwin Junker Maschinenfabrik Gmbh Spannvorrichtung mit Zentriervorrichtung an einem Schleifspindelrotor und Rotationsteil mit einer derartigen Zentriervorrichtung
EP2123380A4 (en) * 2007-01-09 2011-10-12 Makita Corp FIXING DEVICE FOR ROTATING BLADE TOOL
DE102008015955A1 (de) * 2008-03-20 2009-08-13 Metabowerke Gmbh Handwerkzeuggerät

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11806857B2 (en) 2020-08-28 2023-11-07 Black & Decker, Inc. Airflow intake configuration in power tool

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Publication number Publication date
WO2012055646A1 (de) 2012-05-03
JP5678195B2 (ja) 2015-02-25
JP2013540599A (ja) 2013-11-07
RU2013124408A (ru) 2014-12-10
RU2588909C2 (ru) 2016-07-10
DE102010043190A1 (de) 2012-05-03
EP2632636A1 (de) 2013-09-04

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